LAS VEGAS (AP) — On the Fremont Street pedestrian mall, Michael Troy Moore can be found wearing nothing but a G-string and a stuffed rooster on his lap while he plays heavy metal music. Inside the confines of Las Vegas City Hall on Tuesday, though, Moore dressed far more conservatively to air his grievances with a proposed ordinance aimed at creating order in the chaotic confines of the downtown Las Vegas mall that officials say are driving tourists and families away. Moore and a small crowd of other street musicians, magicians and impersonators and others took up the constitutional issue when offering varying concerns about a proposal to limit performances to 38 zones measuring six-feet in diameter during peak hours between 3 p.m.